Find the next term in the following series :

4, 2, 7, 5, 10, 8, ,

13, 11

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12, 10

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14, 16

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16, 18

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Solution

The correct option is A 13, 11
Correct option is (b).

The alternate terms here are following linear equations in one variable of the form :
For odd terms - 3x + 1
For even terms - 3x - 1

Hence the 7th term ⇒ 3(4) + 1 = 13
and the 8th term ⇒ 3(4) - 1 = 11

Answer - 13, 11

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